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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-08-20 16:15:40 +0300
committerVinod Koul <vkoul@kernel.org>2019-08-21 09:41:27 +0530
commitb3757413b91ecf4a227c5f075446afe8126d882f (patch)
tree8144034f54ab6920fc663ea19096491f08805802
parentae923c91aa3b4f7e20b764744188c0d859243d81 (diff)
downloadlinux-b3757413b91ecf4a227c5f075446afe8126d882f.tar.bz2
dmaengine: dw: platform: Use struct dw_dma_chip_pdata
Now, when we have a generic structure for the chip and platform data, use it in the platform glue driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20190820131546.75744-5-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
-rw-r--r--drivers/dma/dw/platform.c42
1 files changed, 31 insertions, 11 deletions
diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 382dfd9e9600..234abbd6359a 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -168,12 +168,22 @@ dw_dma_parse_dt(struct platform_device *pdev)
static int dw_probe(struct platform_device *pdev)
{
+ const struct dw_dma_chip_pdata *match;
+ struct dw_dma_chip_pdata *data;
struct dw_dma_chip *chip;
struct device *dev = &pdev->dev;
struct resource *mem;
const struct dw_dma_platform_data *pdata;
int err;
+ match = device_get_match_data(dev);
+ if (!match)
+ return -ENODEV;
+
+ data = devm_kmemdup(&pdev->dev, match, sizeof(*match), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL);
if (!chip)
return -ENOMEM;
@@ -199,6 +209,8 @@ static int dw_probe(struct platform_device *pdev)
chip->id = pdev->id;
chip->pdata = pdata;
+ data->chip = chip;
+
chip->clk = devm_clk_get(chip->dev, "hclk");
if (IS_ERR(chip->clk))
return PTR_ERR(chip->clk);
@@ -208,11 +220,11 @@ static int dw_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
- err = dw_dma_probe(chip);
+ err = data->probe(chip);
if (err)
goto err_dw_dma_probe;
- platform_set_drvdata(pdev, chip);
+ platform_set_drvdata(pdev, data);
if (pdev->dev.of_node) {
err = of_dma_controller_register(pdev->dev.of_node,
@@ -235,12 +247,17 @@ err_dw_dma_probe:
static int dw_remove(struct platform_device *pdev)
{
- struct dw_dma_chip *chip = platform_get_drvdata(pdev);
+ struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev);
+ struct dw_dma_chip *chip = data->chip;
+ int ret;
if (pdev->dev.of_node)
of_dma_controller_free(pdev->dev.of_node);
- dw_dma_remove(chip);
+ ret = data->remove(chip);
+ if (ret)
+ dev_warn(chip->dev, "can't remove device properly: %d\n", ret);
+
pm_runtime_disable(&pdev->dev);
clk_disable_unprepare(chip->clk);
@@ -249,7 +266,8 @@ static int dw_remove(struct platform_device *pdev)
static void dw_shutdown(struct platform_device *pdev)
{
- struct dw_dma_chip *chip = platform_get_drvdata(pdev);
+ struct dw_dma_chip_pdata *data = platform_get_drvdata(pdev);
+ struct dw_dma_chip *chip = data->chip;
/*
* We have to call do_dw_dma_disable() to stop any ongoing transfer. On
@@ -269,7 +287,7 @@ static void dw_shutdown(struct platform_device *pdev)
#ifdef CONFIG_OF
static const struct of_device_id dw_dma_of_id_table[] = {
- { .compatible = "snps,dma-spear1340" },
+ { .compatible = "snps,dma-spear1340", .data = &dw_dma_chip_pdata },
{}
};
MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);
@@ -277,9 +295,9 @@ MODULE_DEVICE_TABLE(of, dw_dma_of_id_table);
#ifdef CONFIG_ACPI
static const struct acpi_device_id dw_dma_acpi_id_table[] = {
- { "INTL9C60", 0 },
- { "80862286", 0 },
- { "808622C0", 0 },
+ { "INTL9C60", (kernel_ulong_t)&dw_dma_chip_pdata },
+ { "80862286", (kernel_ulong_t)&dw_dma_chip_pdata },
+ { "808622C0", (kernel_ulong_t)&dw_dma_chip_pdata },
{ }
};
MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);
@@ -289,7 +307,8 @@ MODULE_DEVICE_TABLE(acpi, dw_dma_acpi_id_table);
static int dw_suspend_late(struct device *dev)
{
- struct dw_dma_chip *chip = dev_get_drvdata(dev);
+ struct dw_dma_chip_pdata *data = dev_get_drvdata(dev);
+ struct dw_dma_chip *chip = data->chip;
do_dw_dma_disable(chip);
clk_disable_unprepare(chip->clk);
@@ -299,7 +318,8 @@ static int dw_suspend_late(struct device *dev)
static int dw_resume_early(struct device *dev)
{
- struct dw_dma_chip *chip = dev_get_drvdata(dev);
+ struct dw_dma_chip_pdata *data = dev_get_drvdata(dev);
+ struct dw_dma_chip *chip = data->chip;
int ret;
ret = clk_prepare_enable(chip->clk);